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GE UR Series Instruction Manual Page 204

Line differential relay.
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5.5 GROUPED ELEMENTS
b) OPEN POLE DETECTOR
Ø
PATH: SETTINGS
GROUPED ELEMENTS
OPEN POLE DETECTOR
5
The Open Pole Detector logic is designed to detect if any pole of the associated circuit breaker is opened or the conductor
is broken on the protected power line and cable. The output FlexLogic™ operands can be used in three phase and single
phase tripping schemes, in reclosing schemes, in blocking some elements (like CT failure) and in signaling or indication
schemes. In single-pole tripping schemes, if OPEN POLE flag is set, any other subsequent fault should cause a three-
phase trip regardless of fault type.
This element's logic is built on detecting absence of current in one phase during presence of current in other phases.
Phases A, B and C breaker auxiliary contacts (if available) are used in addition to make a logic decision for single-pole trip-
ping applications. If voltage input is available, Low Voltage function is used to detect absence of the monitoring voltage in
the associated pole of the breaker.
OPEN POLE FUNCTION:
This setting is used to Enable/Disable operation of the element.
OPEN POLE BLOCK:
This setting is used to select a FlexLogic™ operand that blocks operation of the element.
OPEN POLE CURRENT SOURCE:
This setting is used to select the source for the current for the element.
5-120
ÖØ
SUPERVISING ELEMENTS
OPEN POLE FUNCTION:
Disabled
OPEN POLE BLOCK:
MESSAGE
Off
OPEN POLE CURRENT
MESSAGE
SOURCE: SRC 1
OPEN POLE CURRENT
MESSAGE
PKP:
0.20 pu
OPEN POLE BROKEN
MESSAGE
CONDUCTOR: Disabled
OPEN POLE VOLTAGE
MESSAGE
INPUT: Disabled
OPEN POLE VOLTAGE
MESSAGE
SOURCE: SRC 1
OPEN POLE φA AUX CO:
MESSAGE
Off
OPEN POLE φB AUX CO:
MESSAGE
Off
OPEN POLE φC AUX CO:
MESSAGE
Off
OPEN POLE PICKUP
MESSAGE
DELAY:
0.060 s
OPEN POLE RESET
MESSAGE
DELAY:
0.100 s
OPEN POLE TARGET:
MESSAGE
Self-reset
OPEN POLE EVENTS:
MESSAGE
Disabled
L90 Line Differential Relay
ÖØ
OPEN POLE DETECTOR
Range: Disabled, Enabled
Range: FlexLogic™ operand
Range: SRC 1, SRC 2,..., SRC 6
Range: 0.05 to 20.00 pu in steps of 0.01
Range: Disabled, Enabled
Range: Disabled, Enabled
Range: SRC 1, SRC 2,..., SRC 6
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5 SETTINGS
GE Power Management

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L90

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